Rugged elevations are due to crustal extension, related to underlying mantle heat or convective upwelling, in the ________.
A)East African rift
B)European Alps
C)Appalachians and Caledonians
D)NE edge of Indian Ocean

Question

Quizplus · Accepted Answer

The East African rift is a prime example of rugged elevations due to crustal extension, which is related to underlying mantle heat or convective upwelling. This geological process is responsible for the formation of the Great Rift Valley, the highest peak in Africa, and many other prominent geological features in the region. The other choices are also associated with rugged elevations, but they have different geological origins. The European Alps, for example, are the result of plate tectonics and collision between the African and Eurasian plates. The Appalachians and Caledonians are the remnants of ancient mountain ranges that have been eroded over time. The NE edge of the Indian Ocean is a tectonic boundary between the Indian and African plates, but it is not typically associated with rugged elevations.

Rugged Elevations Are Due to Crustal Extension, Related to Underlying